Work-in-progress snapshot of the source.android.com (formerly PDK) site
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+page.title=GPS
+pdk.version=1.0
+doc.type=porting
+@jd:body
+
+<div id="qv-wrapper">
+<div id="qv">
+<h2>In this document</h2>
+<a name="toc"/>
+<ul>
+<li><a href="#androidGPSBuildingDriver">Building a GPS Library</a></li>
+<li><a href="#androidGPSInterface">Interface</a></li>
+</ul>
+</div>
+</div>
+
+<p>Android defines a user space C abstraction interface for GPS hardware. The interface header is defined in <code>include/hardware/gps.h</code>. In order to integate GPS with Android, you need to build a shared library that implements this interface. </p>
+
+
+<a name="androidGPSBuildingDriver"></a><h3>Building a GPS Library</h3>
+
+<p>To implement a GPS driver, create a shared library that implements the interface defined in <code>gps.h</code>. You must name your shared library <code>libgps.so</code> so that it will get loaded from <code>/system/lib</code> at runtime. Place GPS sources and Android.mk in <code>vendor/acme/chipset_or_board/gps/</code> (where "acme" is your organization name and "chipset_or_board" is your hardware target).</p>
+
+<p>The following stub <code>Android.mk</code> file ensures that <code>libgps</code> compiles and links to the appropriate libraries:</p>
+
+<pre class="prettify">
+LOCAL_PATH := $(call my-dir)
+include $(CLEAR_VARS)
+
+LOCAL_MODULE := libgps
+
+LOCAL_STATIC_LIBRARIES:= \
+# include any static library dependencies
+
+LOCAL_SHARED_LIBRARIES := \
+# include any shared library dependencies
+
+LOCAL_SRC_FILES += \
+# include your source files. eg. MyGpsLibrary.cpp
+
+LOCAL_CFLAGS += \
+# include any needed compile flags
+
+LOCAL_C_INCLUDES:= \
+# include any needed local header files
+
+include $(BUILD_SHARED_LIBRARY)
+</pre>
+
+
+<a name="androidGPSInterface"></a><h3>Interface</h3>
+
+
+
+<p><span class="lh3"><a name="androidDoxygenNote"></a></span>
+
+<p class="note"><strong>Note</strong>: This document relies on some Doxygen-generated content that appears in an iFrame below. To return to the Doxygen default content for this page, <a href="gps.html">click here</a>.</p>
+
+
+<iframe onLoad="resizeDoxFrameHeight();" src="gps_8h.html" scrolling="no" scroll="no" id="doxygen" marginwidth="0" marginheight="0" frameborder="0" style="width:100%;"></iframe>